24397213 has 2 divisors, whose sum is σ = 24397214. Its totient is φ = 24397212.

The previous prime is 24397169. The next prime is 24397229. The reversal of 24397213 is 31279342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19740249 + 4656964 = 4443^2 + 2158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24397213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24397253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12198606 + 12198607.

It is an arithmetic number, because the mean of its divisors is an integer number (12198607).

Almost surely, 2^24397213 is an apocalyptic number.

It is an amenable number.

24397213 is a deficient number, since it is larger than the sum of its proper divisors (1).

24397213 is an equidigital number, since it uses as much as digits as its factorization.

24397213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 24397213 is about 4939.3535002063. The cubic root of 24397213 is about 290.0325488635.

The spelling of 24397213 in words is "twenty-four million, three hundred ninety-seven thousand, two hundred thirteen".